The invention discloses a financial self-service equipment bank note distribution method; whether the distributed bank note amount is less than or equal to the residual amount of a bank note box in the financial self-service equipment is judged, if yes, the lowest common multiple of bank note face value in the financial self-service equipment is obtained, if not, the bank note distribution fails;quotient and remainder that the lowest common multiple is divided by the distributed bank note amount form the base number and mantissa of the distributed bank note amount respectively; the base number part of the distributed bank note amount is distributed according to the bank note distribution principle; the remaining amount of the distributed bank note amount which carries out base number distribution and the mantissa of the distributed bank note amount form residual, and secondary bank note distribution is carried out to the residual by an exhaustion method, so as to realize high-speed and high-efficiency bank note distribution.